Knife Project
Knife Project is a powerful Blender tool for quickly cutting holes of various shapes in objects.
Tutorials
Normally about normals
Tutorial about normal maps.
Summary:
- 0:08 Check yourself: try to find a mistake
- 0:34 What is Normal?
- 1:12 What is the difference between DirectX and OpenGL normal maps?
- 2:05 How to use DirectX normal maps in Blender?
- 2:26 Invert normal maps on inverted polygons
- 2:53 Bonus
User interface elements alignment by columns
Interface elements in custom user panels often do not correspond to each other in size. As a result – the overall panel layout does not look beautiful. As an example, let’s create a custom panel and place an operator button and an input text field on it.
Can we make it more accurate?
Electron microscope organic surface shader for Blender Eevee render engine
Creating an organic shader to emulate an electron microscope look for Blender EEVEE render engine tutorials.
By Vitaly Sokol
Render from console only on the specified GPU devices
Sometimes, to effectively distribute the hardware load it is necessary to make a render from Blender only on certain video cards of several of them.
To do this we can use a simple script in which specify the numbers of devices to be used for rendering.
Render from console only on the specified GPU devicesRead More »
Assigning custom properties to vertexes
Working with mesh geometry, it may be necessary to assign each vertex some custom properties or data that must be written to the blend-file when saved, and which must be accessed later.
However, an attempt to assign the necessary data to the vertexes through the creation of custom properties fails. Instead of the custom vertex property, only a tuple with reference to the type of the property is created.
How to save mesh data to text
Sometimes it is necessary to save data for creating a mesh (its vertices and polygon indices arrays) to text, for example, for further use in a script or addon.
We can export the mesh to one of the open formats, for example, to *.obj, but if we need only its vertexes and polygons data, we can use the following simple script:
Custom property
The Blender API provides a set of simple property types described in bpy.props (IntProperty, BoolProperty, etc.). But the basic types are not always enough, sometimes we need more complex ones. The Blender API allows to group simple properties to make complex properties.
Let’s consider such complex property creation and make the 3×3 matrix property as an example.
Drawing in Blender viewport
The Blender 2.80 API provides the ability to draw in a viewport (3D Viewport) using the “gpu” module.
As an example let’s draw a simple coordinate system widget in the center of the scene, consisting of three lines with different colors.